CVE-2026-121415— Parse Server before 8.6.111 and 9.0.0 before 9.10.6-alpha.3 Field Corruption via Null Dot Notation Key

Quick assessment

Affected

parse-community parse-server

Exploitation

No confirmed in-the-wild exploitation; assess based on exposure

Recommended action

Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

在 MongoDB 上运行的 Parse Server 版本早于 8.6.111，以及 9.0.0 至 9.10.6-alpha.3 之间的版本，存在一个漏洞：对于值为 null 的点表示法（dot notation）键，系统跳过了字段类型验证。这导致攻击者可以在 Pointer、Number、String、Date 或 Boolean 类型的字段下写入子文档。任何拥有写权限的客户端（包括在允许公开写操作时的未认证客户端）均可利用此漏洞破坏字段值、通过内部日期字段使对象无法读取，或破坏数字字段的原子操作。

CVSS 3.7 · Low Updated Nov 03, 2026

Possible ATT&CK Techniques 2 AI

T1565 · Data Manipulation T1190 · Exploit Public-Facing Application

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Vulnerability Information

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Vulnerability Title

Parse Server before 8.6.111 and 9.0.0 before 9.10.6-alpha.3 Field Corruption via Null Dot Notation Key

Source: CVE Program / CVE List V5

Vulnerability Description

Parse Server before 8.6.111 and 9.0.0 before 9.10.6-alpha.3 on MongoDB skips field type validation for null-valued dot notation keys, allowing sub-documents to be written beneath Pointer, Number, String, Date, or Boolean fields. Any client with write access, including unauthenticated clients where public writes are permitted, can corrupt field values, make objects unreadable via internal date fields, or break atomic operations on number fields.

Source: CVE Program / CVE List V5

CVSS Information

CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:L

Source: CVE Program / CVE List V5

Vulnerability Type

输入验证不恰当

Source: CVE Program / CVE List V5

Affected Products

Vendor	Product	Affected Versions	CPE	Subscribe
parse-community	parse-server	9.0.0 ~ 9.10.6-alpha.3	-
parse-community	parse-server	0 ~ 8.6.111	-

II. Public POCs for CVE-2026-121415

#	POC Description	Source Link	Shenlong Link

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III. Intelligence Information for CVE-2026-121415

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Other References for CVE-2026-121415 (4)

https://github.com/parse-community/parse-server/pull/10804 patch issue-tracking
https://github.com/parse-community/parse-server/pull/10805 patch issue-tracking
https://github.com/parse-community/parse-server/security/advisories/GHSA-655c-2xf3-77x9 vendor-advisory
https://www.vulncheck.com/advisories/parse-server-before-8.6.111-and-9.0.0-before-9.10.6-alpha.3-field-corruption-via-null-dot-notation-key third-party-advisory

https://www.cve.org/CVERecord?id=CVE-2026-121415

Same Patch Batch · parse-community · 2026-11-03 · 3 CVEs total

CVE-2026-121414	5.9 MEDIUM	Parse Server before 8.6.110 and 9.0.0 before 9.10.6-alpha.2 Denial of Service via afterSav
CVE-2026-121413	3.1 LOW	Parse Server before 8.6.112 and 9.0.0 before 9.10.6-alpha.4 Session Permission Bypass via

IV. Related Vulnerabilities

Same product: parse-server

Same vendor: parse-community

Same weakness: CWE-20